I'm calling an API repeatedly (500,000 times) and I noticed it runs 4-5x faster on PowerShell 5. The code below is not the actual API, but a minimal example that demos the issue.

Steps to reproduce

I'm running this on 2 different "machines":

• PowerShell 5 and 6 on Windows 10 (physical)
• PowerShell 5 and 7 on Windows Server (VM)

The results are pretty consistent. I noticed PowerShell 6 or 7 for Mac was really slow -- that's why I started benchmarking.

You can adjust $max on your machine to get a more reasonable run duration for comparison.

<#
Ver.   Sec
----   ---
   5     1
   6     4
   7     5
#>

$max = 10
$start = Get-Date -Format "HH:mm:ss"
foreach ($i in 1..$max) {
    Invoke-RestMethod "https://postman-echo.com/get?i=$i"
}
$end = Get-Date -Format "HH:mm:ss"
write-host "started at" $start
write-host "  ended at" $end